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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Qt Toolkit - About Qt</title><style type="text/css"><!--h3.fn,span.fn { margin-left: 1cm; text-indent: -1cm; }a:link { color: #004faf; text-decoration: none }a:visited { color: #672967; text-decoration: none }body { background: white; color: black; }--></style></head><body bgcolor="#ffffff"><p><table width="100%"><tr><td><a href="index.html"><img width="100" height="100" src="qtlogo.png"alt="Home" border="0"><img width="100"height="100" src="face.png" alt="Home" border="0"></a><td valign="top"><div align="right"><img src="dochead.png" width="472" height="27"><br><a href="classes.html"><b>Classes</b></a>- <a href="annotated.html">Annotated</a>- <a href="hierarchy.html">Tree</a>- <a href="functions.html">Functions</a>- <a href="index.html">Home</a>- <a href="topicals.html"><b>Structure</b> <font face="Arial,Helvetica,Geneva,Swiss,SunSans-Regular" align="center" size=32>Qte</font></a></div></table><h1 align="center"> About Qt</h1><br clear="all"><p>Qt is a cross-platform C++ GUI application framework. It providesapplication developers with all the functionality needed to buildstate-of-the-art graphical user interfaces. Qt is fullyobject-oriented, easily extensible, and allows true componentprogramming.<p>Since its commercial introduction in early1996, Qt has formed the basis of many thousands of successfulapplications worldwide. Qt is also the basis of the popular<a class="r" href="http://www.kde.org/">KDE</a> Linuxdesktop environment, a standard component of all major Linux distributions.<p>Qt is supported on the following platforms:<ul> <li><b>MS/Windows</b> - 95, 98, NT, and 2000 <li><b>Unix/X11</b> - Linux, Sun Solaris, HP-UX, Digital Unix, IBM AIX, SGI IRIX and a wide range of others <li><b>Embedded</b> - Linux platforms with framebuffer support.</ul><p>Qt is a product of <a href="troll.html">Trolltech</a>.<p>Qt is released in different editions:<p><dl><dd><b>Qt Enterprise Edition</b> and <b>Qt Professional Edition</b>provide for commercial software development.They permits traditional commercial softwaredistribution and includes free upgrades and Technical SupportService. For the latest prices, please see the Trolltech web site, <ahref="http://www.trolltech.com/pricing.html">Pricing and Availability</a>page, or contact <a href="mailto:sales@trolltech.com">sales@trolltech.com</a>.The Enterprise Edition offers <a href="modules.html">extended modules</a> over the Professional Edition.<p><dd><b>Qt Free Edition</b> is the Unix/X11 version of Qtavailable for development of <em>Free and Open Source software</em>only. It is provided free of charge under the terms of both the<a href="license.html">Q Public License</a> and the<a href="gpl.html">GNU General Public License</a>.The latest version is available for<a href="http://www.trolltech.com/dl/qtfree-dl.html">download</a>.<p><dd><b>Qt/Embedded Free Edition</b> is the Embedded version of Qtavailable for development of <em>Free software</em>only. It is provided free of charge under the terms of the<a href="gpl.html">GNU General Public License</a>.<p></dl><p><address><hr><div align="center"><table width="100%" cellspacing="0" border="0"><tr><td>Copyright ⌨️ 快捷键说明
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